Summary: Purchased this product for using with Smartphone. SmartPhone: Samsung Galaxy S Navigator: Google Navigation Connection: Bluetooth GPS Mouse from Argotronic - Android Market Place. Had Pharos bluetooth GPS. Due to both Samsung Galaxy S built-in GPS and Pharos GPS no/delay starting, I decided to purchase this product after reading reviews. It starts very fast within 10-20 sec, almost all times start within seconds. Very satisfied with this product except one thing.
Summary: This Bluetooth GPS unit works well and is simple to use. I have not explored the more complex capabilities but I know that it locks on to satellites fairly quickly and doesn't lose them. It even works indoors, though it is a bit slower than with a direct or near direct (like in a car) view of the sky. The slower mode is plenty quick enough for basic use. The faster mode almost seems real-time quick.
Summary: Holds a charge forever. Grabs signal fast. Holds the signal when stuffed into a backpack or when it falls on the floor of the car and slides under the dash. How's it do that? The switch feels a little cheap, but it hasn't broken. The LED lights are cryptic and require a manual within easy reach, which is why I docked it a star. Works great with my T-Mobile MDA. Very simple to use. Great!